Year	Number
2004-01-01	6701
2005-01-01	7028
2006-01-01	7627
2007-01-01	7660
2008-01-01	7712
2009-01-01	7838
2010-01-01	7900
2011-01-01	7950
2012-01-01	8058
2013-01-01	8152
2014-01-01	8237
2015-01-01	8304
2016-01-01	8263